Urticaria, known as wind bumps by the common people, is a common, allergic skin disease with allergies as the main cause. There are many causes of urticaria, such as drugs, food, food additives, dust mites, inhalants (pollen, formaldehyde, animal dander), mosquito bites, physical factors (such as mechanical stimulation, wind, cold, sunlight), alcohol consumption, certain chronic diseases, and genetic factors. Among the many factors, food allergy is one of the most common causes of hives. During the holidays there is a wide variety of food and drink, which increases the chances of allergens entering the body. This is why the rate of hives is higher during the holidays than on weekdays. The types of food allergens vary from person to person, and the common ones are fish, shrimp, seafood, mushrooms, mushrooms, food additives, etc. The rash of urticaria is characterized by a sudden onset and can occur all over the body; the rash is characterized by irregularly shaped, bright red or pale white clusters of varying sizes, accompanied by itching, and the rash often expands and increases after scratching. The rash usually lasts for a few minutes to a few hours and then fades on its own, leaving no trace. However, they are prone to recurrence, and recurrence for more than 6 weeks is chronic urticaria. If the rash occurs on the eyelids, lips, foreskin, ears, or throat, it often appears edematous and congested, called: angioedema. If the rash appears only after scratching or local pressure on the skin, it is called skin scarring or artificial urticaria. If the skin appears as a fine, small, windy, flushed patch of itchy skin during exercise, sweating, or excitement, it is called cholinergic urticaria. A few patients may have systemic symptoms such as nausea, abdominal pain and chest tightness. In severe cases, pallor, drop in blood pressure and fainting are called anaphylaxis. Usually, only skin symptoms (wind masses, itching) should be seen in dermatology. In case of severe abdominal pain, chest tightness, pallor, drop in blood pressure and other medical symptoms, go to the emergency room of the nearest hospital. If the edema in the throat is obvious, go to the ear, nose and throat department. If you are seriously ill and there is no hospital nearby, you should call the local emergency number to receive timely resuscitation treatment as soon as possible. For those who are prone to hives, it is best to consult a dermatologist in advance to understand the condition and use or reserve some medications appropriately.